Consulta: subjectFacets:"Waste water"
Registros recuperados: 18
Data/hora: 12/06/2024 16:24:41

Efectos ambientales en la agricultura por el uso de aguas residuales del canal de Chilhuacán, Atlixco, Puebla
Provedor de dados: Depósito Institucional Abierto de Documentos Digitales del Colegio de Postgraduados (COLPOS DIGITAL )
Autores: Neri Ramírez Efraín.
La zona agrícola del canal Chilhuacán se riega con aguas residuales provenientes del  río Nexapa, es altamente productiva en hortalizas, forrajes y ornamentales, pero con un riesgo implícito para suelos y cultivos, debido a que las aguas tienen contaminantes,  principalmente metales pesados y alta salinidad. El objetivo de esta investigación fue:  “Evaluar los efectos ambientales y sociales de la agricultura de riego ocasionados por el  uso de aguas residuales del canal Chilhuacán derivadas del río Nexapa”. Para lo cual  se llevaron a cabo muestreos y análisis de agua, suelo y cultivos, para determinar el  nivel de contaminación. En el caso del agua, se realizaron tres muestreos en el 2007 en  época de estiaje, encontrándose que la concentración total de...
Tipo: Tesis
Palavras-chave: Contaminación microbiológica; Metales pesados; Cultivos hortícolas; Heavy metals. Waste water; Waste water.
Ano: 2008
URL: http://hdl.handle.net/10521/1196

Equilibrium sorption isotherm studies of Cd(II), Pb(II) and Zn(II) ions detoxification from waste water using unmodified and EDTA-modified maize husk
Provedor de dados: Electronic Journal of Biotechnology
Autores: Igwe,Jude C; Abia,Augustin A.
The mobilization of heavy metals in the environment due to industrial activities is of serious concern due to the toxicity of these metals in humans and other forms of life. The equilibrium adsorption isotherms of Cd(II), Pb(II) and Zn(II) ions, detoxification from waste water using unmodified and EDTA-modified maize husk have been studied. Maize husk was found to be an excellent adsorbent for the removal of these metal ions. The amount of these metal ions adsorbed increased as the initial concentration increased. Also, EDTA-modification enhanced the adsorption capacity of maize husk due to the chelating ability of ethylenediamine tetra acetic acid (EDTA). Among the three adsorption isotherms tested, Dubinin-Radushkevich isotherm gave the best fit with R²...
Tipo: Journal article
Palavras-chave: Adsorption isotherm; EDTA; Heavy metals; Maize husk; Waste water.
Ano: 2007
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582007000400007

Monitoring of trace metal contamination in the Souss estuary (South Morocco) using the clams Cerastoderma edule and Scrobicularia plana
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Anajjar, E; Chiffoleau, Jean-francois; Bergayou, H; Moukrim, A; Burgeot, Thierry; Cheggour, M.
Concentrations of seven metals (Cd, Cu, Cr, Pb, Ni, Zn, Hg) were monitored monthly during 2 years in two bivalves, Cerastoderma edule and Scrobicularia plana collected from the Souss estuary (South Morocco) before and after the commissioning of a sewage treatment plant in November 2002. According to trace metals, changes in concentrations were observed mainly in S. plana, characterised by a decrease of Cu, Hg and Pb when Cd was clearly increasing. Conversely, no clear changes were observed in C. edule during the same periods. This study suggests the use of S. plana in the monitoring of trace metal contamination of such coastal marine environments.
Tipo: Text
Palavras-chave: Monitoring; Waste water; Bivalves; Metals; South estuary.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-4515.pdf

Etude experimentale de la disparition de coliformes fecaux d'un effluent urb ain en milieu marin
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Bonnefont, J; Lelong, P; Martin, Y.
The authors studied survival of faecal coliform (decrease rate + T90) in experimental devices (closed or continuous flow systems) using various dilutions of urban sewage in sea-water. Survival appears to be high (T90 between 12 to 81 h). Dilution level of sewage and organic matter contents seems to be important to explain the decrease of faecal coliforms observed in these experiments.
Tipo: Text
Palavras-chave: Bacteria; Microbial contamination; Pathogenic bacteria; Survival; Waste water; Marine pollution.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-1009.pdf

LINAMARIN: THE TOXIC COMPOUND OF CASSAVA
Provedor de dados: Journal of Venomous Animals and Toxins
Autores: CEREDA,M. P.; MATTOS,M.C.Y.
Cassava is a widely grown root crop which accumulates two cyanogenic glucosides, linamarin and lotaustralin. Linamarin accounts for more than 80% of the cassava cyanogenic glucosides. It is a ß-glucoside of acetone cyanohydrin and ethyl-methyl-ketone-cyanohydrin. Linamarin ß-linkage can only be broken under high pressure, high temperature and use of mineral acids, while its enzymatic break occurs easily. Linamarase, an endogenous cassava enzyme, can break this ß-linkage. The enzymatic reaction occurs under optimum conditions at 25ºC, at pH 5.5 to 6.0. Linamarin is present in all parts of the cassava plant, being more concentrated on the root and leaves. If the enzyme and substrate are joined, a good detoxification can occur. All the cassava plant species...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cyanide; Cassava; Linamarin; Cyanogenic glucoside; Residues; Waste water; Culinary and industrial uses.
Ano: 1996
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-79301996000100002

Capacidad de dilución del Río Guayas para contrarrestar el impacto por vertientes industriales terrestres
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Suárez, P.
Una de las principales y mayores causas de la contaminación marina, es la falta de tratamiento de efluentes industriales antes de verterlos en los ríos, mares u océano, bajo este contexto, los ríos operan como verdaderos filtros y emplean sus características hidráulicas para tratar de diluir las aguas residuales de las industrias. Se considera entonces como área de estudio el Parque industrial Río Guayas sur de la ciudad de Guayaquil, tomando dos decargas industriales de considerable magnitud analizando tanto del Río Guayas como de estos efluentes industriales la DBO, DQO, OD, pH y Microbiología. Se correlaciona los valores resultado de los ensayos para evaluar la contaminación. Entonces se pone a consideración un Modelo de Calidad de Agua en el que se...
Tipo: Journal Contribution
Palavras-chave: Waste water; Industrial wastes; Environmental impact; Freshwater pollution; River water; Water analysis; Waste water; Environmental impact; Industrial wastes; Water analysis; Http://aims.fao.org/aos/agrovoc/c_24927; Http://aims.fao.org/aos/agrovoc/c_24420; Http://aims.fao.org/aos/agrovoc/c_11763; Http://aims.fao.org/aos/agrovoc/c_16064.
Ano: 1998
URL: http://hdl.handle.net/1834/2314

Crecimiento de Scenedesmus quadricauda en  efluentes cloacales de la ciudad de Trelew, Chubut, Argentina
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Méndez, L.; Albarracín, I.; Cravero, M.; Salomón, R.
La creciente problemática frente al tratamiento de aguas residuales y su posible reuso, ha planteado sistemas biológicos que remuevan los contaminantes manteniendo el ecosistema y disminuyendo costos. Este trabajo consiste en un ensayo de biorremediación, evaluando la tasa de crecimiento de Scenedesmus quadricauda cultivada en efluentes domiciliarios de la ciudad de Trelew, Chubut, Argentina. Diariamente se determina conductividad, pH y densidad celular. Al inicio y al final del ensayo se obtienen valores para fosfato, fósforo total, sulfuro, amoníaco, nitrito, nitrato, detergentes, DBO5, DQO y número más probable de coliformes totales y fecales. Se observa una disminución en amoníaco, fósforo, fósforo total, DBO5 y DQO, lo que confirma la efectividad en...
Tipo: Journal Contribution
Palavras-chave: Growth; Waste water; Water purification.
Ano: 2011
URL: http://hdl.handle.net/1834/4630

Efecto de la temperatura y el período de oxidación sobre la demanda bioquímica de oxígeno de aguas residuales pesqueras
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Suárez Álvarez, G.; Valdés Herrera, R.; Romero López, T.
This report intend to know, if BOD5 of fishing industry waste waters,follows a similar and proportional behavior to different temperatures and from incubation times, where the oxidative processes of organic matter are experimentally developed and to obtain a mathematical equation that allows us to know the job stream necessary, when diminishing the experimental time, if we accelerated the processes by means of thermal increases; besides to determine which of the propose methodologies in the bibliography, is the one that explains better the phenomenon of the BOD completes and the deoxygenating constant, important parameters to design any type of system of treatment to the liquid waste waters of the fishing industry. Finding this relation, will be able to be...
Tipo: Proceedings Paper
Palavras-chave: Waste water; Industrial wastes; Fishery industry; Waste water; Industrial wastes; Http://aims.fao.org/aos/agrovoc/c_24927; Http://aims.fao.org/aos/agrovoc/c_11763.
Ano: 2006
URL: http://hdl.handle.net/1834/2189

Kinetic and isotherm studies of copper (II) removal from wastewater using various adsorbents
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Abdel Wahab, O.
The present investigation deals with the utilization of marine green algae (GA), Ulva lactuca, and an activated carbon prepared from green algae (CGA) as adsorbents for the removal of copper from wastewater. A series of experiments were conducted in a batch system to evaluate the effect of system variables. The effect of pH, initial copper concentration, dose of adsorbents were considered. The optimal pH value of copper (II) adsorption onto GA and CGA was found to be pH 5.0. The maximum uptake capacities were 24.5 and 32.3 mg copper (II) per gram of GA and CGA, respectively. The efficiency of removal was slightly changed by replacing an aqueous solution by saline water or wastewater containing the same copper concentration. Adsorption kinetic data were...
Tipo: Journal Contribution
Palavras-chave: Laboratory Study; Adsorption; Kinetics; Isotherms; Waste water; Adsorption; Http://aims.fao.org/aos/agrovoc/c_137.
Ano: 2007
URL: http://hdl.handle.net/1834/1910

Crecimiento de scenedesmus quadricauda en efluentes cloacales de la ciudad de Trelew, Chubut, Argentina
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Méndez Suaza, L.; Albarracín, I.; Cravero, M.; Salomón, R.
La creciente problemática frente al tratamiento de aguas residuales y su posible reuso ha planteado sistemas biológicos que remuevan los contaminantes manteniendo el ecosistema y disminuyendo costos. Este trabajo consiste en un ensayo de biorremediación evaluando la tasa de crecimiento de Scenedesmus quadricauda cultivada en efluentes domiciliarios de la ciudad de Trelew, Chubut, Argentina. Diariamente se determina conductividad, pH y densidad celular. Al inicio y al final de ensayo se obtienen valores para fosfato, fósforo total, sulfuro, amoníaco, nitrito, nitrato, detergentes, DBO5, DQO y número más probable de coliformes totales y fecales. Se observa una disminución en amoníaco, fósforo, fósforo total, DBO5 y DQO lo que confirma la efectividad en la...
Tipo: Preprint
Palavras-chave: Growth; Waste water; Water purification; Growth; Waste water; Water purification; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_24927; Http://aims.fao.org/aos/agrovoc/c_34145.
Ano: 2010
URL: http://hdl.handle.net/1834/3639

Pollution en lagune Ebrié et ses impacts sur l'environnement et les populations riveraines.
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Adingra, A.A.; Kouassi, A.M.
La pollution induit et entraîne au quotidien la dégradation du milieu lagunaire Ebrié, avec des conséquences et des impacts multiformes sur la santé humaines et le développement socio économique. Les moyens financiers et matériels disponibles doivent être renforcés substantiellement pour mettre en place des infrastructures et des aménagements d'assainissement adéquats, tels que les centres d'enfouissements techniques de déchets d'une part, ainsi que les stations de traitement et d'épuration des eaux usées domestiques et industrielles d'autre part. De même, l'amélioration des compétences et des capacités en ressources humaines des différents acteurs institutionnels, reste déterminante pour le suivi et le contrôle de la qualité de l'eau ainsi que la gestion...
Tipo: Journal Contribution
Palavras-chave: Water pollution; Water quality control; Waste water; Water reclamation.
Ano: 2011
URL: http://hdl.handle.net/1834/5812

Producción de moina sp alimentada con chlorella spp. cultivada con riles orgánicos de la industria pesquera cubana.
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Romero, Teresita de J.; Manso, B.M.; López, R.; Martínez, F.C.; Moreno, M.
El incremento sustancial de la acuicultura cubana y la carencia de algunos fertilizantes usados para fines de cultivo fitoplantónico, que finalmente pasan a nutrir especies zooplanctónicas como el cladócero Moina, ha dado pauta para realizar el presente estudio, referido al cultivo de dicha especie con la microalga Chlorella spp. desarrollada previamente con riles orgánicos de la industria pesquera. Se realizaron dos tandas experimentales: 1) en acuarios de 50 L de capacidad efectiva 2) en tanquetas de 180 L. Se hallaron parámetros poblacionales derivados del desarrollo del zooplancton y se evaluó la calidad del agua. Como conclusión se señala que Chlorella spp. cultivada con los riles orgánicos de la industria pesquera resultó un alimento adecuado para el...
Tipo: Preprint
Palavras-chave: Cultures; Waste water; Waste water; Http://aims.fao.org/aos/agrovoc/c_24927.
Ano: 2010
URL: http://hdl.handle.net/1834/3592

Estudio de impacto ambiental en Punta Fort William, verano austral: 1995-1996, 1997-1998
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Valencia T., M.
Durante los veranos australes de 1995-1996 y 1997-1998 se llevó a cabo, en Ensenada Guayaquil, cuerpo de agua aledaño a Punta Fort William, Isla Greenwich, del archipiélago de las Shetland del Sur, lugar del asentamiento de la Estación Científica "Pedro Vicente Maldonado", estudios químicos de la calidad de las aguas tendientes a determinar el eventual impacto que las actividades humanas pudieran ocasionar sobre tal ecosistema. Se presenta información acerca de las condiciones de oxigenación de las aguas, temperatura y salinidad de las mismas, la capacidad nutricia en relación con la concentración de micronutrientes inorgánicos así como información acerca de la presencia de hidrocarburos del petróleo disueltos y dispersos y, para establecer la efectividad...
Tipo: Journal Contribution
Palavras-chave: Environmental impact; Water quality; Hydrocarbons; Waste water; Dissolved oxygen; Chemical analysis; Environmental impact; Water quality; Waste water; Dissolved oxygen; Hydrocarbons; Http://aims.fao.org/aos/agrovoc/c_24420; Http://aims.fao.org/aos/agrovoc/c_16061; Http://aims.fao.org/aos/agrovoc/c_24927; Http://aims.fao.org/aos/agrovoc/c_36106; Http://aims.fao.org/aos/agrovoc/c_3719.
Ano: 1998
URL: http://hdl.handle.net/1834/3850

The potential role of constructed wetlands in protection and sustainable management of lake catchments in Kenya
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Oketch, M. A.
Constructed wetlands are man-made ecosystems, which are specially designed for treatment of wastewater and non-point source pollution. Constructed wetland technology is gaining popularity due to its economically and environmentally sound attributes as a wastewater management option. Freshwater lakes in Kenya are under threat from degradation as human populations in the catchment areas increase, demands for natural resource extraction grow and urbanization and industrialization intensify. Consequently, there is increased surface runoff, causing sedimentation and eutrophication and ultimately deterioration of water quality, habitats and biodiversity. This trend requires integrated and sustainable water resource management strategies. Strategies for...
Tipo: Proceedings Paper
Palavras-chave: Waste water; Wetlands; Catchment area; Resource conservation; Environment management; Resource management; Resource conservation; Waste water; Resource conservation; Resource management; Resource conservation.
Ano: 2006
URL: http://hdl.handle.net/1834/1470

Aporte contaminante de las aguas residuales de la industria pesquera cubana y su impacto sobre el ecosistema
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Romero López, T.
The present paper involves their results in the pollutant contributions to the aquatic ecosystems according to the products processed in different productive facilities of the Cuba Island, and concerning to the most significant fishing resources as lobster, white shrimp, tuna, shark, snapper, mackerel, jack and bill fish. The polluting loads in 12 years (between 1955 and 1999) respond to the indicators BOD, QOD, TP, TNK and N-NH4. The captures for those years were approximately between 3 950 and 23 970 tons, with fluctuations of BOD loads between 56 and 342 tons and of DQO between 111 and 676 tons. The principal nutrients contribution was the nitrogen, followed by the phosphorous and finally the ammonium, representing a total contribution of 136,3; 52,7...
Tipo: Proceedings Paper
Palavras-chave: Fishery industry; Waste water; Environmental impact; Waste water; Environmental impact; Http://aims.fao.org/aos/agrovoc/c_24927; Http://aims.fao.org/aos/agrovoc/c_24420.
Ano: 2006
URL: http://hdl.handle.net/1834/2083

Microalgal wastewater treatment-systems: potentials and limits
Provedor de dados: Open Marine Archive
Autores: De Pauw, N.; Van Vaerenbergh, E.
Algae can play a positive role in wastewater treatment by recycling of nutrients, by taking up carbon, nitrogen and phosphorus, by reducing the nutrient load through stripping and precipitation, by producing oxygen for bacterial decomposition of organic matter, by eliminating pathogenic bacteria through bactericide action, and last but not least by solving odor problems. If sufficient insolation, and space are available, intensive algal wastewater treatment-systems proved to be valuable and promising alternatives to conventional treatment systems based on activated sludge or trickling filters. The various technologies developed for algal wastewater treatment are commented in this review. They include simple stabilization-oxidation ponds, as well as more...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Waste water; Wastewater treatment.
Ano: 1983
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3350

บทบาทของพืชในพื้นที่ชุ่มน้ำในการบำบัดน้ำเสีย
Provedor de dados: Thai Agricultural Research Repository
Autores: Pantip Klomjek.
Tipo: Collection
Palavras-chave: Wetland; Constructed wetland; Waste water; Transformation; Filtration; Sedimentation; Environmental; พื้นที่ชุ่มน้ำ; ระบบบึงประดิษฐ์; น้ำเสีย; การตกตะกอน; การกรอง; การปนเปื้อน; สิ่งแวดล้อม; พืช; การบำบัดน้ำเสีย; บทบาทของพืช; การลดความเป็นพิษมลสาร.
Ano: 2009
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5953

Characterization of brewery waste water and evaluation of its potential for biogas production
Provedor de dados: Agricultural Engineering International : The CIGR e-journal
Autores: Murunga, Sylvia Injete; Mbuge, Duncan Onyango; Gitau, Ayub Njoroge; Mutwiwa, Urbanus Ndungwa; Wekesa, Ingrid Namae.
The issue of global warming and climate change is strongly receiving public attention and has become a major environmental concern both nationally and internationally. Brewing industries are among the largest consumers of water and the largest source of organic effluent mostly from the brewing, cleaning, and cooling processes which must be treated to allowable levels to reduce environmental pollution. Close to 10 L water is used for every 1 L beer that is brewed, though the amount of water in the final beer is small. A study was undertaken to characterize and assess the variations in the quality of untreated brewery waste water. Samples from different process streams including brewing line, clean in place line and mixing line from two brewing industries in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brewery; Physicochemical characterization; Waste water; Pollution; Biodegradable; Anaerobic digestion.
Ano: 2016
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3759